CN105602432B - A kind of water nano flame retardant polyurethane floating coating and preparation method thereof - Google Patents
A kind of water nano flame retardant polyurethane floating coating and preparation method thereof Download PDFInfo
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- CN105602432B CN105602432B CN201610186145.4A CN201610186145A CN105602432B CN 105602432 B CN105602432 B CN 105602432B CN 201610186145 A CN201610186145 A CN 201610186145A CN 105602432 B CN105602432 B CN 105602432B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000004814 polyurethane Substances 0.000 title claims abstract description 36
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 36
- 239000003063 flame retardant Substances 0.000 title claims abstract description 33
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000011248 coating agent Substances 0.000 title abstract description 17
- 238000000576 coating method Methods 0.000 title abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- -1 aliphatic hydrocarbon isocyanates Chemical class 0.000 claims abstract description 29
- 239000012948 isocyanate Substances 0.000 claims abstract description 20
- 239000002562 thickening agent Substances 0.000 claims abstract description 15
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract 2
- 239000003973 paint Substances 0.000 claims description 30
- 239000003085 diluting agent Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 10
- 239000006184 cosolvent Substances 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 239000000049 pigment Substances 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 6
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 229910021485 fumed silica Inorganic materials 0.000 claims description 6
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- 229920000388 Polyphosphate Polymers 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 5
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 5
- 239000001205 polyphosphate Substances 0.000 claims description 5
- 235000011176 polyphosphates Nutrition 0.000 claims description 5
- 239000000080 wetting agent Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229920001400 block copolymer Polymers 0.000 claims description 3
- 239000013522 chelant Substances 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 150000002576 ketones Chemical class 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 241000549556 Nanos Species 0.000 abstract 1
- 239000013530 defoamer Substances 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of water nano flame retardant polyurethane floating coating and preparation method thereof.It is an object of the invention to provide one kind with physical and mechanical properties is strong, adhesive force is excellent, fast drying, fillibility are good, the rail traffic vehicles water nano flame retardant polyurethane floating coating of anti-flammability is had concurrently.The invention is characterized in that：With water-based hydroxyl acrylic acid dispersion, feature color stuffing, dispersion moisture agent, defoamer, levelling agent, thickener, PH stabilizer, halogen-free environment-friendlyflame flame retardant, water and aliphatic hydrocarbon isocyanates, after mixing by a certain percentage, by processes such as scattered, grinding, toning, packagings, a kind of 2K water nanos flame retardant polyurethane floating coating is made.
Description
Technical Field
The invention relates to a water-based nano flame-retardant polyurethane middle coating and a preparation method thereof. In particular to waterborne polyurethane middle coating paint for rail transit vehicles and a preparation method thereof.
Background
Along with the continuous improvement of the international requirement on environmental protection, the requirement of people on the coating is also continuously improved, the existing solvent-based coating faces huge challenges, and the water-based coating uses water to replace an organic solvent as a diluent, so that the pollution of the coating to the environment in the construction process is reduced, the resources are saved, and the coating occupies more and more important positions in the development in the future. Various performance indexes of the existing paint in the water-based nano flame-retardant polyurethane can basically meet the technical requirements of relevant standards of TB/T2393-2001, HJ2014 and BS 6853.
According to the preparation principle of the water-based nano flame-retardant polyurethane middle coating, the water-based nano flame-retardant polyurethane middle coating for the rail transit vehicle, which has the advantages of strong physical and mechanical properties, excellent adhesive force, good filling performance and flame retardance, is provided.
Disclosure of Invention
The invention aims to provide a water-based nano flame-retardant polyurethane middle coating and a preparation method thereof, so as to meet the production requirement of rapidly developing rail transit vehicles.
The technical solution adopted by the invention is as follows: the preparation method of the water-based nano flame-retardant polyurethane middle paint is characterized in that the water-based nano flame-retardant polyurethane middle paint is prepared by mixing a water-based hydroxyl acrylic resin dispersoid, a pigment, a filler, an auxiliary agent and water as a water-based paint component and aliphatic hydrocarbon isocyanate as a curing agent component according to a certain proportion, and adding a proper amount of diluent during construction. The preparation method comprises the following steps:
(1) the water-based nano color paste comprises the following raw materials in percentage by weight:
40.0-48.0 parts of aqueous hydroxyl acrylic acid dispersoid;
wherein,
the pH stabilizer is one or more of diethanolamine and AMP;
the dispersant is one or a mixture of a plurality of block copolymers containing pigment affinity groups and structured acrylic acid copolymers;
the wetting agent is a nonionic surfactant;
the defoaming agent comprises a foam breaking polymer and polysiloxane;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the nano auxiliary agent is water-based nano aluminum oxide or surface modified silicon dioxide particles;
the pigment and filler is one or a mixture of more of titanium dioxide, talcum powder, barium sulfate, ammonium polyphosphate, melamine polyphosphate and aluminum hydroxide;
the diluent is self-made deionized water;
the aqueous hydroxyl acrylic acid dispersoid is aqueous acrylic acid emulsion containing hydroxyl functional groups.
(2) The water-based paint comprises the following raw materials in percentage by weight:
90.0 to 96.0 portions of water-based nano color paste,
0.30 to 0.50 part of a leveling agent,
0.50 to 1.00 portion of corrosion inhibitor,
0.10 to 0.20 part of thickening agent,
3.0 to 7.0 parts of diluent,
wherein,
the flatting agent is polyether modified polydimethylsiloxane and polyacrylate;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the corrosion inhibitor is modified zinc chelate without nitrite;
the diluent is deionized water.
(3) The water-based curing agent comprises the following raw materials in percentage by weight:
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate A,
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate B,
20.0 to 30.0 portions of cosolvent,
wherein,
the aliphatic hydrocarbon isocyanate A is aliphatic polyisocyanate of hydrophilic hexamethylene diisocyanate;
the aliphatic hydrocarbon isocyanate B is aliphatic polyisocyanate of lipophilic hexamethylene diisocyanate;
the cosolvent is ether ester or ketone alcohol solvent.
The steps are as follows:
preparing water-based nano color paste: the 9 raw materials in the aqueous nano color paste are put into a movable pulling cylinder at room temperature according to the weight ratio, are stirred, soaked and pre-dispersed to prepare coarse color paste, and then are pumped into a sand mill by an air pump to be ground until the fineness is less than or equal to 20 microns, so that the aqueous nano color paste is prepared.
(II) preparation of water paint vehicle: putting the aqueous nano color paste prepared in the step (one) and 4 raw materials of a leveling agent, a thickening agent, a corrosion inhibitor and a diluent into a toning cylinder according to the weight ratio for toning, filtering after fully and uniformly stirring, and removing mechanical impurities to prepare an aqueous paint vehicle; packaging with plastic barrel;
(III) preparation of the waterborne curing agent: placing the aliphatic hydrocarbon isocyanate and the cosolvent in a container according to the proportion, stirring, uniformly dispersing, filtering to produce the curing agent, and packaging with a plastic barrel for later use;
(IV) preparing the water-based nano flame-retardant polyurethane middle paint: when in use, the water-based paint vehicle and the water-based curing agent are mixed according to the weight ratio of 8:1, and then deionized water is added to adjust the construction viscosity, so that the water-based nano flame-retardant polyurethane primer surfacer is formed.
The invention has the beneficial effects that:
the waterborne nanometer flame-retardant polyurethane middle coating adopts a waterborne 2K polyurethane system and selectively adds nanometer functional additives, thereby realizing the characteristics of high hardness and good scratch resistance.
At present, P-C-N is mostly used as a flame retardant system at home and abroad, the halogen-free aluminum hydroxide inorganic flame retardant is selected, and on the basis, melamine polyphosphate, ammonium polyphosphate and the like are selected for compounding, so that the flame retardant can better resist flame through the synergistic enhancement effect, and the environment is not polluted. The defects that the traditional amine and halogen flame retardants have good flame retardant effect but have large smoke generation amount and are easy to generate toxic and harmful gases such as hydrogen halide and the like are overcome, so that the product has better environment-friendly and flame retardant properties.
The waterborne nanometer flame-retardant polyurethane middle coating disclosed by the invention is good in adhesiveness, fast in drying, good in filling property and easy to recoat, can better realize the matching property with waterborne/oily epoxy primer, unsaturated polyester putty and acrylic polyurethane finish paint for subways and urban rail locomotives, saves the material cost and prolongs the service life.
And fourthly, the product is detected by a product quality supervision and inspection center of a third party of the original Ministry of railways, and the fireproof and flame retardant performances are tested by SGS company, so that the performances in all aspects meet the requirements of the waterborne polyurethane middle coating for rail transit vehicles.
Table 1: main technical requirements of the product
Description of the drawings:
the attached drawing is a process flow chart of the invention.
Detailed Description
The technical solution adopted by the invention is as follows: the water-based nano flame-retardant polyurethane middle paint and the preparation method thereof are characterized by comprising the following raw materials and steps:
the preparation method of the water-based nano flame-retardant polyurethane middle paint is characterized in that the water-based nano flame-retardant polyurethane middle paint is prepared by mixing a water-based hydroxyl acrylic resin dispersoid, a pigment, a filler, an auxiliary agent and water as a water-based paint component and aliphatic hydrocarbon isocyanate as a curing agent component according to a certain proportion, and adding a proper amount of diluent during construction. The preparation method comprises the following steps:
(1) the water-based nano color paste comprises the following raw materials in percentage by weight:
40.0-48.0 parts of aqueous hydroxyl acrylic acid dispersoid;
wherein,
the pH stabilizer is one or more of diethanolamine and AMP;
the dispersant is one or a mixture of a plurality of block copolymers containing pigment affinity groups and structured acrylic acid copolymers;
the wetting agent is a nonionic surfactant;
the defoaming agent comprises a foam breaking polymer and polysiloxane;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the nano auxiliary agent is water-based nano aluminum oxide or surface modified silicon dioxide particles;
the pigment and filler is one or a mixture of more of titanium dioxide, talcum powder, barium sulfate, ammonium polyphosphate, melamine polyphosphate and aluminum hydroxide;
the diluent is self-made deionized water;
the aqueous hydroxyl acrylic acid dispersoid is aqueous acrylic acid emulsion containing hydroxyl functional groups.
(2) The water-based paint comprises the following raw materials in percentage by weight:
90.0 to 96.0 portions of water-based nano color paste,
0.30 to 0.50 part of a leveling agent,
0.50 to 1.00 portion of corrosion inhibitor,
0.10 to 0.20 part of thickening agent,
3.0 to 7.0 parts of diluent,
wherein,
the flatting agent is polyether modified polydimethylsiloxane and polyacrylate;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the corrosion inhibitor is modified zinc chelate without nitrite;
the diluent is deionized water.
(3) The water-based curing agent comprises the following raw materials in percentage by weight:
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate A,
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate B,
20.0 to 30.0 portions of cosolvent,
wherein,
the aliphatic hydrocarbon isocyanate A is aliphatic polyisocyanate of hydrophilic hexamethylene diisocyanate;
the aliphatic hydrocarbon isocyanate B is aliphatic polyisocyanate of lipophilic hexamethylene diisocyanate;
the cosolvent is ether ester or ketone alcohol solvent.
The steps are as follows:
preparing water-based nano color paste: the 9 raw materials in the aqueous nano color paste are put into a movable pulling cylinder at room temperature according to the weight ratio, are stirred, soaked and pre-dispersed to prepare coarse color paste, and then are pumped into a sand mill by an air pump to be ground until the fineness is less than or equal to 20 microns, so that the aqueous nano color paste is prepared.
(II) preparation of water paint vehicle: putting the aqueous nano color paste prepared in the step (one) and 4 raw materials of a leveling agent, a thickening agent, a corrosion inhibitor and a diluent into a toning cylinder according to the weight ratio for toning, filtering after fully and uniformly stirring, and removing mechanical impurities to prepare an aqueous paint vehicle; packaging with plastic barrel;
(III) preparation of the waterborne curing agent: placing the aliphatic hydrocarbon isocyanate and the cosolvent in a container according to the proportion, stirring, uniformly dispersing, filtering to produce the curing agent, and packaging with a plastic barrel for later use;
(IV) preparing the water-based nano flame-retardant polyurethane middle paint: when in use, the water-based paint vehicle and the water-based curing agent are mixed according to the weight ratio of 8:1, and then deionized water is added to adjust the construction viscosity, so that the water-based nano flame-retardant polyurethane primer surfacer is formed.
Specific examples of the invention are given below:
note: the aqueous hydroxy acrylic acid dispersion is produced by Germany Bayer company; the PH stabilizer is produced by the Dow chemical company; the dispersant is produced by Germany Bike company; the wetting agent is produced by American air chemical company; the defoaming agent/thickening agent is produced by Germany Digao company; the nano-additive is produced by Germany Moker company; titanium dioxide is R706 rutile type produced by U.S. DuPont; the ammonium polyphosphate is produced by Shenzhen crystal material science and technology company; melamine polyphosphate/aluminum hydroxide was an agent of Shanghai customs trade company; the leveling agent is produced by German Bike company; the corrosion inhibitor is produced by the German modest company (Shanghai); the aliphatic hydrocarbon isocyanate A/B is produced by Germany Bayer company; the cosolvent is produced by the Dow chemical company.
Claims (2)
1. A preparation method of water-based nanometer flame-retardant polyurethane middle paint is characterized in that the water-based nanometer flame-retardant polyurethane middle paint comprises water-based hydroxyl acrylic resin dispersoid, pigment, filler, auxiliary agent and water which are water-based paint components, and aliphatic hydrocarbon isocyanate which is a curing agent component, which are mixed according to a certain proportion, and are mixed by adding a proper amount of diluent during construction;
the preparation method comprises the following steps:
(1) the water-based nano color paste comprises the following raw materials in parts by weight:
0.10-0.30 part of pH stabilizer, 0.90-1.50 parts of dispersant,
0.80 to 1.20 parts of wetting agent, 0.20 to 0.30 parts of defoaming agent,
0.15 to 0.25 portion of thickening agent, 2.00 to 4.00 portions of nano-additive,
38.0 to 45.0 portions of pigment and filler, 10.0 to 15.0 portions of diluent,
40.0-48.0 parts of aqueous hydroxyl acrylic acid dispersoid;
wherein,
the pH stabilizer is one or a mixture of diethanolamine and AMP;
the dispersant is one or a mixture of a plurality of block copolymers containing pigment affinity groups and structured acrylic acid copolymers;
the wetting agent is a nonionic surfactant;
the defoaming agent comprises a foam breaking polymer and polysiloxane;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the nano auxiliary agent is water-based nano aluminum oxide or surface modified silicon dioxide particles;
the pigment and filler is compounded by aluminum hydroxide, melamine polyphosphate and ammonium polyphosphate;
the aqueous hydroxyl acrylic acid dispersoid is an acrylic acid aqueous emulsion containing hydroxyl functional groups;
the diluent is self-made deionized water;
(2) the water-based paint comprises the following raw materials in parts by weight:
90.0 to 96.0 portions of water-based nano color paste,
0.30 to 0.50 part of a leveling agent,
0.50 to 1.00 portion of corrosion inhibitor,
0.10 to 0.20 part of thickening agent,
3.0 to 7.0 parts of diluent,
wherein,
the flatting agent is polyether modified polydimethylsiloxane and polyacrylate;
the thickening agent is a mixture of fumed silica and polyurethane associative agent;
the corrosion inhibitor is modified zinc chelate without nitrite;
the diluent is deionized water;
(3) the water-based curing agent comprises the following raw materials in parts by weight:
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate A,
35.0 to 40.0 parts of aliphatic hydrocarbon isocyanate B,
20.0 to 30.0 portions of cosolvent,
wherein,
the aliphatic hydrocarbon isocyanate A is aliphatic polyisocyanate of hydrophilic hexamethylene diisocyanate;
the aliphatic hydrocarbon isocyanate B is aliphatic polyisocyanate of lipophilic hexamethylene diisocyanate;
the cosolvent is ether ester or ketone alcohol solvent;
the steps are as follows:
preparing water-based nano color paste: putting 9 raw materials in the aqueous nano color paste into a movable drawing cylinder at room temperature according to the weight ratio, stirring, soaking, pre-dispersing to prepare coarse color paste, pumping the coarse color paste into a sand mill by using an air pump, and grinding until the fineness is less than or equal to 20 micrometers to obtain the aqueous nano color paste;
(II) preparation of water paint vehicle: putting the aqueous nano color paste prepared in the step (one) and 4 raw materials of a leveling agent, a thickening agent, a corrosion inhibitor and a diluent into a toning cylinder according to the weight ratio for toning, filtering after fully and uniformly stirring, and removing mechanical impurities to prepare an aqueous paint vehicle; packaging with plastic barrel;
(III) preparation of the waterborne curing agent: placing the aliphatic hydrocarbon isocyanate and the cosolvent in a container according to the proportion, stirring, uniformly dispersing, filtering to produce the curing agent, and packaging with a plastic barrel for later use;
(IV) preparing the water-based nano flame-retardant polyurethane middle paint: when in use, the water-based paint vehicle and the water-based curing agent are mixed according to the weight ratio of 8:1, and then deionized water is added to adjust the construction viscosity, so that the water-based nano flame-retardant polyurethane primer surfacer is formed.
2. The waterborne nano flame retardant polyurethane mid-coat paint prepared by the process of claim 1.
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| KR102079384B1 (en) * | 2016-11-02 | 2020-02-19 | 주식회사 케이씨씨 | Flame-retardant paint composition |
| CN106675366A (en) * | 2016-12-21 | 2017-05-17 | 东来涂料技术（上海）有限公司 | Water-based double-ingredient environment-friendly middle coating primer and preparation method thereof |
| CN108017976B (en) * | 2017-11-03 | 2020-05-19 | 中国神华能源股份有限公司 | Locomotive coating method |
| CN109280470B (en) * | 2018-08-02 | 2020-08-14 | 雅图高新材料股份有限公司 | Intermediate coating for fiber-reinforced epoxy resin composite material and preparation method thereof |
| CN109852222A (en) * | 2019-01-16 | 2019-06-07 | 中山蓝海洋水性涂料有限公司 | A kind of fire protection flame retarding molding sand face aqueous polyurethane finishing coat and preparation method thereof |
| CN111349385A (en) * | 2020-04-17 | 2020-06-30 | 常州穗时新材料有限公司 | Polishing-free water-based primer surfacer matched with ceramic finish and preparation method thereof |
| CN114806325A (en) * | 2022-03-21 | 2022-07-29 | 河南普力特克新材料有限公司 | Encapsulation flame-retardant coating for aerogel and production process thereof |
| CN115139594A (en) * | 2022-05-25 | 2022-10-04 | 浙江丰成门业有限公司 | Heat-preservation heat-insulation fireproof door and production process thereof |
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